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Title: Flow rates through earthen, geomembrane & composite cut-off walls

Abstract

Flow rates through soil-bentonite (SIB), geomembrane (GM), and composite geomembrane-soil (CGS) cut-off walls were determined using a numerical model of ground water flow. Various geological and wall conditions were simulated. Results of the simulations show that flow rates past all wall types are affected by hydraulic conductivities of the aquifer and underlying confining layer. Flow rates past GM walls with perfect joints are very low, provided the confining layer has low hydraulic conductivity. However, if a small fraction of the joints are defective, GM walls can be ineffective in blocking flow. CGS walls with a low hydraulic conductivity shell are less sensitive to joint defects. CGS walls with good shells typically have lower flow rates than SB and GM walls, even if the CGS wall contains defective joints.

Authors:
;  [1]
  1. Univ. of Wisconsin, Madison, WI (United States)
Publication Date:
Research Org.:
US Department of Energy (USDOE), Washington DC (United States)
OSTI Identifier:
576694
Report Number(s):
CONF-970208-Proc.
ON: DE98001967; TRN: 98:005236
Resource Type:
Conference
Resource Relation:
Conference: International containment technology conference and exhibition, St. Petersburg, FL (United States), 9-12 Feb 1997; Other Information: PBD: [1997]; Related Information: Is Part Of International Containment Technology Conference: Proceedings; PB: 1140 p.
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 36 MATERIALS SCIENCE; BENTONITE; CONTAINMENT SYSTEMS; GROUND WATER; HYDRAULIC CONDUCTIVITY; JOINTS; WALLS; FLOW RATE

Citation Formats

Tachavises, C, and Benson, C H. Flow rates through earthen, geomembrane & composite cut-off walls. United States: N. p., 1997. Web.
Tachavises, C, & Benson, C H. Flow rates through earthen, geomembrane & composite cut-off walls. United States.
Tachavises, C, and Benson, C H. 1997. "Flow rates through earthen, geomembrane & composite cut-off walls". United States. https://www.osti.gov/servlets/purl/576694.
@article{osti_576694,
title = {Flow rates through earthen, geomembrane & composite cut-off walls},
author = {Tachavises, C and Benson, C H},
abstractNote = {Flow rates through soil-bentonite (SIB), geomembrane (GM), and composite geomembrane-soil (CGS) cut-off walls were determined using a numerical model of ground water flow. Various geological and wall conditions were simulated. Results of the simulations show that flow rates past all wall types are affected by hydraulic conductivities of the aquifer and underlying confining layer. Flow rates past GM walls with perfect joints are very low, provided the confining layer has low hydraulic conductivity. However, if a small fraction of the joints are defective, GM walls can be ineffective in blocking flow. CGS walls with a low hydraulic conductivity shell are less sensitive to joint defects. CGS walls with good shells typically have lower flow rates than SB and GM walls, even if the CGS wall contains defective joints.},
doi = {},
url = {https://www.osti.gov/biblio/576694}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 1997},
month = {Wed Dec 31 00:00:00 EST 1997}
}

Conference:
Other availability
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